Established Series


The Larue series consists of deep, well drained, moderately permeable soils that formed in thick sandy and loamy sediments. These soils are on nearly level to strongly sloping uplands and high stream terraces. Slope is dominantly 3 to 8 percent but ranges from 0 to 12 percent.

TAXONOMIC CLASS: Loamy, siliceous, semiactive, thermic Arenic Paleudalfs

TYPICAL PEDON: Larue loamy fine sand, on smooth 4 percent slope, in pastureland.
(Colors are for moist soil unless otherwise stated.)

Ap--0 to 8 inches; dark brown (10YR 4/3) loamy fine sand; moderate medium granular structure; soft, friable; common fine roots; medium acid; abrupt smooth boundary. (4 to 10 inches thick)

E--8 to 26 inches; brown (7.5YR 5/4) loamy fine sand; single grained; loose; few fine roots; few fine and medium iron enriched concretions and soft masses; medium acid; gradual smooth boundary. (16 to 30 inches thick)

Bt1--26 to 36 inches; yellowish red (5YR 4/6) sandy clay loam; moderate medium subangular blocky structure; hard, friable; few fine roots; common fine pores; discontinuous clay films on faces of peds; few fine and medium black concretions; medium acid; gradual smooth boundary. (6 to 12 inches thick)

Bt2--36 to 50 inches; yellowish red (5YR 5/6) sandy clay loam; few medium and coarse distinct dark red (2.5YR 3/6) and few medium faint reddish yellow (5YR 6/6) mottles; moderate medium subangular blocky structure; hard, friable; common fine pores; discontinuous clay films on faces of peds; medium acid; gradual smooth boundary. (10 to 20 inches thick)

Bt3--50 to 72 inches; reddish yellow (5YR 6/6) sandy clay loam; common medium faint red (2.5YR 4/6) and yellowish red (5YR 4/6) mottles; weak medium subangular blocky structure; hard, friable; common fine pores; discontinuous clay films on faces of peds; medium acid; diffuse smooth boundary. (0 to 26 inches thick)

Bt4--72 to 84 inches; reddish yellow (5YR 6/6) light sandy clay loam; many coarse distinct red (2.5YR 4/6) and faint yellowish red (5YR 5/8) mottles and common streaks of yellowish brown (10YR 5/4) and pale brown (10YR 6/3) loamy sand; weak coarse subangular blocky structure; hard, friable; few fine black concretions; slightly acid.

TYPE LOCATION: Anderson County, Texas; about 0.25 mile east of county road at point 0.5 mile from intersection with another county road about 5.0 miles north of the Country Club in Palestine.

RANGE IN CHARACTERISTICS: Solum thickness ranges from 60 to over 100 inches.

The A or Ap horizon is dark brown or brown (7.5YR 4/4; 10YR 4/3, 5/3) or pale brown (10YR 6/3). The E horizon is brown (7.5YR 4/4, 5/4), strong brown (7.5YR 5/6), or light yellowish brown (10YR 6/4) or very pale brown (10YR 7/4). The A horizon is loamy fine sand
or fine sand throughout and is slightly or strongly acid.

The Bt1 and Bt2 horizons are red (2.5YR 4/6, 5/6), yellowish red (5YR 4/6, 4/8, 5/6), or strong brown (7.5YR 5/6). The upper 20 inches of the Bt horizon is sandy clay loam with the average clay content ranging from 20 to 30 percent. The lower Bt horizons are red (2.5YR 4/6, 5/6, 5/8), yellowish red (5YR 4/6, 4/8, 5/6, 5/8), reddish yellow (5YR 6/6, 6/8), or strong brown (7.5YR 5/6). The lower B2t horizons contain mottles in shades of red, yellow, and brown. These horizons are loam, sandy clay loam, or clay loam with a few pockets of uncoated sand grains in the lower part. The reaction of the Bt horizon ranges from slightly to strongly acid.

COMPETING SERIES: These are the Larton, and Wolfpen series in the same family and the Bienville, Boy, Depcor, Heatly, Heaton, Kenney, Lucy, Nobscot, Pickton, Rosalie, Silstid, Styx, Trep, and Wagram series. Bienville soils have discontinuous Bt horizons and sandy control sections. Boy, Kenney, and Pickton soils have sandy epipedons more than 40 inches thick. Depcor soils contain plinthite in the Bt horizon. Heatly, Heaton, Nobscot, Silstid, and Styx soils are drier for longer periods of time. Larton soils contain slightly less clay in the B2t horizons and are commonly on terraces. Lucy, Rosalie, Trep, and Wagram soils have base saturation of less than 35 percent. Wolfpen soils are yellower and have gray mottles in the Bt horizon.

GEOGRAPHIC SETTING: Larue soils are on nearly level to strongly sloping uplands and high stream terraces of the Southern Coastal Plain. Slope gradients range from 0 to 12 percent. The soils formed in unconsolidated sandy and loamy marine and fluvial deposits. The mean annual air temperature at the type location is about 66 degrees F. The average annual rainfall is about 41 inches and the Thornthwaite P-E indices is 66.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Kenney series and the Elrose, Fuquay, Glenpool, Lilbert, Tenaha, and Trawick series. Kenney soils are on lower lying areas. Elrose and Trawick soils have A horizons less than 20 inches thick. Elrose soils are on similar positions and Trawick soils are on adjacent steeper areas. Fuquay and Lilbert soils are on similar positions, have less than 35 percent base saturation, and are strongly or very strongly acid. Glenpool soils are on lower lying positions and have sandy Bt horizons. Tenaha soils are on adjacent slopes, and have a solum of less than 60 inches thick.

DRAINAGE AND PERMEABILITY: Larue soils are well drained. Runoff is slow and permeability is moderate.

USE AND VEGETATION: Most of Larue soils are used for woodland and improved pasture. A few areas are cropped to corn and some truck crops. Native vegetation is mixed pine and hardwoods of shortleaf and loblolly pine, red oak, sweetgum, post oak, and elm.

DISTRIBUTION AND EXTENT: Southern Coastal Plain, mainly in eastern Texas and Oklahoma, and possibly Louisiana. The series is of moderate extent.


SERIES ESTABLISHED: Anderson County, Texas; 1970.

REMARKS: Diagnostic horizons and features recognized in this pedon are:

Ochric epipedon - 0 to 26 inches (Ap and E horizon)

Arenic feature - loamy fine sand textures more than 20 inches thick.

Argillic horizon - 36 to 72 inches.

National Cooperative Soil Survey
U. S. A.